Home / 21,270.35-29,353.08-11,838.71

Finding the Fourth Proportional to 21,270.35, 29,353.08 and 11,838.71

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Solution

The fourth proportional to 21,270.35, 29,353.08 and 11,838.71 is: 16,337.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270.35 : 29,353.08 = 11,838.71 : x
  2. Step 2: Convert to fraction form
    21,270.35/29,353.08 = 11,838.71/x
  3. Step 3: Cross multiply
    21,270.35x = 29,353.08 × 11,838.71
  4. Step 4: Simplify right side
    21,270.35x = 347,502,395.77
  5. Step 5: Solve for x
    x = 347,502,395.77/21,270.35
  6. Step 6: Final answer
    x = 16,337.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.